# Energy Storage Market Map United States 2026: 76 Startups in 4 Segments > 76 energy storage startups in the United States, mapped in 4 segments: battery storage projects, thermal storage and storage software and more. Source: https://millionrounds.com/market-maps/energy-storage-united-states-market-map (Millionrounds; every figure on the page links to its filing or article) ## Battery storage projects 57 - [Clenera](https://millionrounds.com/company/clenera) - [Primergy Solar](https://millionrounds.com/company/primergy-solar) - [Maxwell Power](https://millionrounds.com/company/maxwell-power) - [NineDot Energy](https://millionrounds.com/company/ninedot-energy) - [Goshe Energy Storage](https://millionrounds.com/company/goshe-energy-storage) - [EnerVenue](https://millionrounds.com/company/enervenue) - [QuantumScape](https://millionrounds.com/company/quantumscape) - [Summit Ridge Energy](https://millionrounds.com/company/summit-ridge-energy) - [esVolta](https://millionrounds.com/company/esvolta) - [BlueWave](https://millionrounds.com/company/bluewave) - [Nexus Renewable Power](https://millionrounds.com/company/nexus-renewable-power) - [Aquion Energy](https://millionrounds.com/company/aquion-energy) - [Plus Power](https://millionrounds.com/company/plus-power) - [Pathway Power](https://millionrounds.com/company/pathway-power) - [Omnidian](https://millionrounds.com/company/omnidian) - [Project Omega](https://millionrounds.com/company/project-omega) - [Nanotech Energy](https://millionrounds.com/company/nanotech-energy) - [Moment Energy](https://millionrounds.com/company/moment-energy) - [International Battery](https://millionrounds.com/company/international-battery) - [Natron Energy](https://millionrounds.com/company/natron-energy) - [*PE* Prudent Energy](https://millionrounds.com/company/prudent-energy) - [ElectrIQ Power](https://millionrounds.com/company/electriq-power) - [Elevate Renewable Energy](https://millionrounds.com/company/elevate-renewable-energy) - [Caban Systems](https://millionrounds.com/company/caban-systems) +33 more ## Thermal storage 11 - [SolarReserve](https://millionrounds.com/company/solarreserve) - [Ice Energy](https://millionrounds.com/company/ice-energy) - [Exowatt](https://millionrounds.com/company/exowatt) - [Fourth Power](https://millionrounds.com/company/fourth-power) - [Sunamp](https://millionrounds.com/company/sunamp) - [Cache Energy](https://millionrounds.com/company/cache-energy) - [Viking Cold Solutions](https://millionrounds.com/company/viking-cold-solutions) - [Harvest Thermal](https://millionrounds.com/company/harvest-thermal) - [NETenergy](https://millionrounds.com/company/netenergy) - [Element 16 Technologies](https://millionrounds.com/company/element-16-technologies) - [Promethean Power Systems](https://millionrounds.com/company/promethean-power-systems) ## Storage software 5 - [On.Energy](https://millionrounds.com/company/on-energy) - [CPower](https://millionrounds.com/company/cpower) - [Alpha Grid](https://millionrounds.com/company/alpha-grid) - [1Energy Systems](https://millionrounds.com/company/1energy-systems) - [Geli](https://millionrounds.com/company/geli) ## Mechanical storage 3 - [Vycon](https://millionrounds.com/company/vycon) - [Qnetic](https://millionrounds.com/company/qnetic) - [Revterra](https://millionrounds.com/company/revterra) ## Segment by segment ### Battery storage projects 57 startups · $8.3B raised - [**Clenera**](https://millionrounds.com/company/clenera) Clenera is a privately-held renewable energy company acquires, develops, builds and manages utility-scale solar farms and energy storage. United States $2.9B - [**Primergy Solar**](https://millionrounds.com/company/primergy-solar) Primergy Solar is a developer, owner and operator focused on both distributed and utility scale solar PV and battery storage projects. United States $760M - [**Maxwell Power**](https://millionrounds.com/company/maxwell-power) Maxwell Power is a renewable energy company that installs solar panels. United States $750M - [**NineDot Energy**](https://millionrounds.com/company/ninedot-energy) NineDot Energy develops battery storage sites and other energy solutions. United States $431M - [**Goshe Energy Storage**](https://millionrounds.com/company/goshe-energy-storage) Goshe Energy Storage develops, constructs, and manages utility-scale energy storage facilities to promote a sustainable energy future. United States $328M - [**EnerVenue**](https://millionrounds.com/company/enervenue) EnerVenue is an energy storage infrastructure company based in Fremont, California, founded in 2020. United States $312M - [**QuantumScape**](https://millionrounds.com/company/quantumscape) QuantumScape develops solid-state lithium-metal batteries for electric vehicles and other energy storage applications. United States $300M - [**Summit Ridge Energy**](https://millionrounds.com/company/summit-ridge-energy) Summit Ridge Energy offers solar, battery storage project acquisition, project development, construction, land and rooftop leasing services. United States $290M ### Thermal storage 11 startups · $425M raised - [**SolarReserve**](https://millionrounds.com/company/solarreserve) SolarReserve, a venture-backed renewable energy company, focuses on advanced solar thermal storage technology. United States $182M - [**Ice Energy**](https://millionrounds.com/company/ice-energy) Ice Energy is a clean energy technology company based in Santa Barbara, California, with a distribution center in Costa Mesa. United States $132M - [**Exowatt**](https://millionrounds.com/company/exowatt) Exowatt is a renewable energy company based in Miami, Florida, founded in 2023. United States $50M - [**Fourth Power**](https://millionrounds.com/company/fourth-power) Fourth Power is an innovative energy technology company based in Cambridge, Massachusetts. United States $39M - [**Sunamp**](https://millionrounds.com/company/sunamp) Sunamp is a company that provides industrial and residential heat battery storage systems. United States $8.1M - [**Cache Energy**](https://millionrounds.com/company/cache-energy) Cache Energy is a technology startup based in Champaign, Illinois, focused on long-duration energy storage (LDES) and heat electrification. United States $4.0M - [**Viking Cold Solutions**](https://millionrounds.com/company/viking-cold-solutions) Viking Cold Solutions provides energy management systems and thermal energy storage solutions to help companies achieve energy efficiency. United States $3.6M - [**Harvest Thermal**](https://millionrounds.com/company/harvest-thermal) Harvest Thermal develops a control system for home use that integrates heating, hot water, and cooling with thermal storage. United States $2.0M ### Storage software 5 startups · $110M raised - [**On.Energy**](https://millionrounds.com/company/on-energy) On.Energy is an energy storage developer that offers analytics and AI-powered energy management software. United States $78M - [**CPower**](https://millionrounds.com/company/cpower) CPower is an energy company that specializes in energy storage, clean energy, and peak demand management. United States $28M - [**Alpha Grid**](https://millionrounds.com/company/alpha-grid) Alpha Grid is a software development company based in Palo Alto, California, founded in 2020. United States $2.5M - [**1Energy Systems**](https://millionrounds.com/company/1energy-systems) 1Energy Systems is a provider of software for grid-connected energy storage systems and other electric energy assets. United States $1.4M - [**Geli**](https://millionrounds.com/company/geli) Geli provides software and business solutions to design, automate, and manage energy storage systems. United States $995K ### Mechanical storage 3 startups · $23M raised - [**Vycon**](https://millionrounds.com/company/vycon) Vycon is a manufacturer of technologically advanced flywheel energy storage systems. United States $18M - [**Qnetic**](https://millionrounds.com/company/qnetic) Qnetic is a renewable energy startup based in New York, founded in 2021. United States $5.1M - [**Revterra**](https://millionrounds.com/company/revterra) Revterra is a Houston-based sustainable energy company founded in 2017. United States $20K **How this map is made.** Every startup here has raised money in rounds we track, and is based in United States. It joins the map when its sectors, read from its rounds, or the opening of its own description say it works in energy storage, and goes to the first segment whose words it carries. Each segment shows its best-funded first. Rebuilt nightly; updated 15 November 2026. ## More market maps [All maps](https://millionrounds.com/market-maps) [Market map **Energy storage market map** 185 startups · 6 segments · $17B](https://millionrounds.com/market-maps/energy-storage-market-map)[Market map · Europe **Energy storage market map: Europe** 70 startups · 5 segments · $5.7B](https://millionrounds.com/market-maps/energy-storage-europe-market-map)[Investors map **Who invests in energy storage** 69 investors · 6 segments](https://millionrounds.com/market-maps/energy-storage-investors-map)[New wave **New energy storage startups, founded 2020 on** 58 startups · 4 segments · $5.0B](https://millionrounds.com/market-maps/new-energy-storage-startups-market-map)[Raised in 2026 **Energy storage startups that raised in 2026** 51 startups · 4 segments · $8.7B](https://millionrounds.com/market-maps/energy-storage-raised-2026-market-map)[Market map · United States **Defense tech market map: United States** 83 startups · 5 segments · $34B](https://millionrounds.com/market-maps/defense-tech-us-market-map) ## Who backs energy storage? Open any company for its rounds and investors, or search the investors behind these startups in the app, with filters, lists and exports. [Find their investors](https://millionrounds.com/login?join=1&next=/app/investors)[Top lists](https://millionrounds.com/top-lists)